<script setup>

const isLoading = ref(false)

// 暴露方法给父组件调用
defineExpose({
  show: () => isLoading.value = true,
  hide: () => isLoading.value = false
})
</script>

<template>
  <div class="loading-container" v-if="isLoading">
    <div class='body'>
      <span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
      </span>
      <div class='base'>
        <span></span>
        <div class='face'></div>
      </div>
    </div>
    <div class='longfazers'>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
    </div>
    <h1>加载中...</h1>
  </div>
</template>

<style scoped lang="scss">
.loading-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--header-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  flex-direction: column;
}

h1 {
  font-family: "Open Sans";
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  margin-top: 20px;
}

.body {
  position: relative;
  animation: speeder 0.4s linear infinite;
}

.body>span {
  height: 5px;
  width: 35px;
  background: var(--primary-color);
  position: absolute;
  top: -19px;
  left: -35px;
  border-radius: 2px 10px 1px 0;
}

.base span {
  position: absolute;
  left: -95px;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-right: 100px solid var(--primary-color);
  border-bottom: 6px solid transparent;
}

.base span:before {
  content: "";
  height: 22px;
  width: 22px;
  border-radius: 50%;
  background: var(--primary-color);
  position: absolute;
  right: -110px;
  top: -16px;
}

.base span:after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  border-top: 0 solid transparent;
  border-right: 55px solid var(--primary-color);
  border-bottom: 16px solid transparent;
  top: -16px;
  right: -98px;
}

.face {
  position: absolute;
  height: 12px;
  width: 20px;
  background: var(--primary-color);
  border-radius: 20px 20px 0 0;
  transform: rotate(-40deg);
  right: -30px;
  top: -15px;
}

.face:after {
  content: "";
  height: 12px;
  width: 12px;
  background: var(--primary-color);
  right: 4px;
  top: 7px;
  position: absolute;
  transform: rotate(40deg);
  transform-origin: 50% 50%;
  border-radius: 0 0 0 2px;
}

.body>span>span:nth-child(1),
.body>span>span:nth-child(2),
.body>span>span:nth-child(3),
.body>span>span:nth-child(4) {
  width: 30px;
  height: 1px;
  background: var(--primary-color);
  position: absolute;
  animation: fazer1 0.2s linear infinite;
}

.body>span>span:nth-child(2) {
  top: 3px;
  animation: fazer2 0.4s linear infinite;
}

.body>span>span:nth-child(3) {
  top: 1px;
  animation: fazer3 0.4s linear infinite;
  animation-delay: -1s;
}

.body>span>span:nth-child(4) {
  top: 4px;
  animation: fazer4 1s linear infinite;
  animation-delay: -1s;
}

.longfazers {
  position: absolute;
  width: 100%;
  height: 100%;
}

.longfazers span {
  position: absolute;
  height: 2px;
  width: 20%;
  background: var(--color);
}

.longfazers span:nth-child(1) {
  top: 20%;
  animation: lf 0.6s linear infinite;
  animation-delay: -5s;
}

.longfazers span:nth-child(2) {
  top: 40%;
  animation: lf2 0.8s linear infinite;
  animation-delay: -1s;
}

.longfazers span:nth-child(3) {
  top: 60%;
  animation: lf3 0.6s linear infinite;
}

.longfazers span:nth-child(4) {
  top: 80%;
  animation: lf4 0.5s linear infinite;
  animation-delay: -3s;
}

@keyframes fazer1 {
  0% {
    left: 0;
  }

  100% {
    left: -80px;
    opacity: 0;
  }
}

@keyframes fazer2 {
  0% {
    left: 0;
  }

  100% {
    left: -100px;
    opacity: 0;
  }
}

@keyframes fazer3 {
  0% {
    left: 0;
  }

  100% {
    left: -50px;
    opacity: 0;
  }
}

@keyframes fazer4 {
  0% {
    left: 0;
  }

  100% {
    left: -150px;
    opacity: 0;
  }
}

@keyframes speeder {
  0% {
    transform: translate(2px, 1px) rotate(0deg);
  }

  10% {
    transform: translate(-1px, -3px) rotate(-1deg);
  }

  20% {
    transform: translate(-2px, 0px) rotate(1deg);
  }

  30% {
    transform: translate(1px, 2px) rotate(0deg);
  }

  40% {
    transform: translate(1px, -1px) rotate(1deg);
  }

  50% {
    transform: translate(-1px, 3px) rotate(-1deg);
  }

  60% {
    transform: translate(-1px, 1px) rotate(0deg);
  }

  70% {
    transform: translate(3px, 1px) rotate(-1deg);
  }

  80% {
    transform: translate(-2px, -1px) rotate(1deg);
  }

  90% {
    transform: translate(2px, 1px) rotate(0deg);
  }

  100% {
    transform: translate(1px, -2px) rotate(-1deg);
  }
}

@keyframes lf {
  0% {
    left: 200%;
  }

  100% {
    left: -200%;
    opacity: 0;
  }
}

@keyframes lf2 {
  0% {
    left: 200%;
  }

  100% {
    left: -200%;
    opacity: 0;
  }
}

@keyframes lf3 {
  0% {
    left: 200%;
  }

  100% {
    left: -100%;
    opacity: 0;
  }
}

@keyframes lf4 {
  0% {
    left: 200%;
  }

  100% {
    left: -100%;
    opacity: 0;
  }
}
</style>